Home / 19,428.91-26,822.96-12,824.11

Finding the Fourth Proportional to 19,428.91, 26,822.96 and 12,824.11

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Solution

The fourth proportional to 19,428.91, 26,822.96 and 12,824.11 is: 17,704.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,428.91 : 26,822.96 = 12,824.11 : x
  2. Step 2: Convert to fraction form
    19,428.91/26,822.96 = 12,824.11/x
  3. Step 3: Cross multiply
    19,428.91x = 26,822.96 × 12,824.11
  4. Step 4: Simplify right side
    19,428.91x = 343,980,525.45
  5. Step 5: Solve for x
    x = 343,980,525.45/19,428.91
  6. Step 6: Final answer
    x = 17,704.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.